CN207215616U - A kind of elastic modulus of concrete experimental rig - Google Patents
A kind of elastic modulus of concrete experimental rig Download PDFInfo
- Publication number
- CN207215616U CN207215616U CN201721104880.2U CN201721104880U CN207215616U CN 207215616 U CN207215616 U CN 207215616U CN 201721104880 U CN201721104880 U CN 201721104880U CN 207215616 U CN207215616 U CN 207215616U
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- circular hole
- bottom plate
- flap
- steel ball
- elastic modulus
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Abstract
The utility model discloses a kind of elastic modulus of concrete experimental rig, including base and steel ball, column is provided with base, its drip irrigation device is, the top of column is provided with the mounting box being made up of top plate, bottom plate and end to end four blocks of side plates, and the distance between bottom plate and top plate are equal to the diameter of steel ball；The rotating shaft of bottom plate is provided through at the geometric center of bottom plate, rotating shaft top is provided with the first flap being bonded with top board undersurface, and bottom is provided with the second flap being bonded with bottom plate bottom surface, the first circular hole is provided with two pieces of flaps；The second circular hole for steel ball drop is provided with top plate and bottom plate, and limiting section is provided with the second circular hole on bottom plate；Elastic modulus of concrete device also includes drive mechanism, and drive mechanism can control two pieces of flaps the second circular hole on top plate and bottom plate is opened a state closed in one all the time；Mounting box top is provided with holding part.The utility model is with the high advantage of the height of drop and direction, test data accuracy that can be precisely controlled steel ball.
Description
Technical field
It the utility model is related to a kind of elastic modulus of concrete experimental rig.
Background technology
The height of agent on crack resistance of concrete punching press impact property is an importance for evaluating concrete dynamic performance.Run on airport
In road, highway pavement, bridge floor even anti-impact, antiknock, earthquake-resistant modern safeguard structure engineering, punching is pressed to the anti-impact of concrete
Hit performance and propose higher requirement.
In National Standard of the People's Republic of China《Cement concrete and mortar synthetic fibers》Provided in GB/T21120
A kind of Bending Concrete impact test method：Foil gauge is pasted at the tensile region maximum strain of test specimen lower surface, test piece upper part sticks
Accelerometer is pasted, and foil gauge is connected dynamic data collection system jointly with accelerometer with wire.In surface of test piece geometry
Heart point places steel backing plate, and hollow bushing is placed on backing plate.Put and drop hammer above sleeve pipe, drop hammer tup bottom surface with sleeve along neat
It is flat, free-falling hammer impact test piece.Per Secondary Shocks since free-falling of dropping hammer, totally stationary completion of being dropped hammer to after impacting.So
It is repeated multiple times, until the first Crack of lower tension surface generation, number of shocks is recorded, i.e., just splits number of shocks.Then after
It is continuous to carry out repeat impact, number of shocks when test specimen bottom crack develops and run through whole interface upwards, visually to combine amplification
Sem observation simultaneously determines to destroy number of shocks.
But the experimental provision used in this standard is made up of plain plate base and drop hammer etc., because experimenter operates
During using dropping hammer by hand, and impact test generally requires repeat impact and could completed, and drops hammer not only increase behaviour by hand
The workload of author, it is unfavorable for improving operating efficiency, and easily causes experimental error, influences the accuracy of test data.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of elastic modulus of concrete experiment dress
Put, it is with the high advantage of the height of drop and direction, test data accuracy that can be precisely controlled steel ball.
To achieve the above object, the utility model provides following technical scheme：
A kind of elastic modulus of concrete experimental rig, including base and steel ball, column are provided with the base, its feature exists
In：The top of the column is provided with mounting box, and the mounting box includes top plate, bottom plate and end to end four blocks of side plates, institute
State the diameter that the distance between bottom plate and top plate are equal to steel ball；Turning for bottom plate is provided through at the geometric center of the bottom plate
Axle, the rotating shaft top are provided with the first flap being bonded with top board undersurface, and bottom is provided with second be bonded with bottom plate bottom surface
Flap；
It is provided with the first circular hole on first flap and the second flap, the circle of the first circular hole on first flap
Vertical line of the heart to the center of circle of first circular hole of the vertical line on the second flap of shaft axis to shaft axis；The bottom plate and
Be provided with the second circular hole on top plate, the first circular hole during initial state on the first flap be located at the second circular hole on top plate just under
Square, the first circular hole on the second flap is staggered with the second circular hole on bottom plate；The diameter and the second circular hole of first circular hole
Diameter be equal to the diameter of steel ball；
The holding part for depositing steel ball is provided with the top of the mounting box, at the second circular hole on mounting box inner bottom plating
It is provided with limiting section；The elastic modulus of concrete device also includes being used for the drive mechanism for driving the axis of rotation.
By using above-mentioned technical proposal, multiple steel balls can be once placed in the holding part at the top of mounting box.Just
During state, the first circular hole on the first flap is aligned with the second circular hole on top plate, on the first circular hole on the second flap and bottom plate
The second circular hole stagger so that only a steel ball fallen at the second circular hole on top plate in mounting box, in the work of limiting section
Under, steel ball will not roll in mounting box；Two pieces of flaps are driven to rotate 90 ° simultaneously using drive mechanism drive shaft so that
The first circular hole on first flap staggers with the second circular hole on top plate, the first circular hole on the second flap and second on bottom plate
Circular hole is aligned, and the first flap blocks other steel balls and fall into mounting box, while the steel ball in mounting box is from second on bottom plate
Circular hole goes out to fall, and the concrete test block on base is impacted；90 ° are rotated backward using drive mechanism drive shaft, again may be used
So that two pieces of flaps recover to initial state, another steel ball is fallen into mounting box.Said process is repeated, concrete test block can be entered
Row multiple shock test, and the height of steel ball drop and direction have the uniformity of height, the accuracy height of test data every time.
Further, the drive mechanism includes lever, and described lever one end is fixedly installed in rotating shaft, and away from rotating shaft
One end set promising lever to provide the push-pull device at fixed of push-and-pull power.
By using above-mentioned technical proposal, when push-pull device at fixed provides thrust, thrust is passed to drive by rotating shaft by lever
Dynamic axis of rotation；When push-pull device at fixed provides pulling force, lever actuated rotating shaft rotates backward so that the first flap and the second flap recover
Initial state.
Further, the push-pull device at fixed includes elastic component and is arranged on the handle of lever end, described elastic component one end
It is fixed on lever, the other end is fixed on the side plate；The slot to make way stretched out for handle is provided with the side plate of the mounting box.
By using above-mentioned technical proposal, lever drives axis of rotation can be made by pulling handle, and elastic component is stretched；Unclamp
Handle, elastic component recover deformation, and handle resets, and rotating shaft rotates backward.Slot to make way provides space for the movement of handle.
Further, it is provided with Anti-slip cover on the handle.
By using above-mentioned technical proposal, Anti-slip cover has the function that increasing friction force, facilitates operator and pulls handle
Operated.
Further, the holding part is to be inclined at the inclined tube at the top of mounting box, on described inclined tube one end and top plate
The second circular hole connection.
By using above-mentioned technical proposal, multiple steel balls can be placed simultaneously in inclined tube, in two pieces of flaps and mounting box
Top plate, bottom plate cooperation under, the steel ball in inclined tube can be fallen into mounting box at the second circular hole on top plate one by one, then one by one
Fallen at the second circular hole on bottom plate.
Further, the one end of the inclined tube away from the second circular hole is provided with funnelform extension.
By using above-mentioned technical proposal, funnelform extension increases the opening of inclined tube so that is easier toward inclined tube
Interior placement steel ball.
Further, the limiting section is to be vertically arranged in the sleeve pipe on bottom plate at the second circular hole, the diameter of described sleeve pipe
More than the diameter of steel ball.
By using above-mentioned technical proposal, when steel ball is fallen into mounting box at the second circular hole on top plate, sleeve pipe is fallen into
Interior, under the stop of sleeve pipe, steel ball will not roll everywhere.The second circular hole pair on the first circular hole on the second flap and bottom plate
On time, steel ball falls at the second circular hole on bottom plate.
Further, it is provided with rounded corner at described sleeve pipe top end opening.
By using above-mentioned technical proposal, rounded corner is not easy quilt cover when steel ball is fallen at the second circular hole on top plate
The top of pipe has protective effect every damage to steel ball.
In summary, the utility model has the advantages that：
1st, two pieces of flaps for being provided with the first circular hole are engaged with the second circular hole on mounting box so that one on top plate and bottom plate
Second circular hole is opened at secondary only one, and steel ball falls into mounting box, then falls one by one and concrete test block is impacted one by one；Steel
The height that ball falls every time is consistent with direction, and experiment data measured accuracy is high；
2nd, multiple steel balls can be once put into inclined tube, without falling sphere repeatedly, ball is picked up, has saved the operating time, beneficial to carrying
The efficiency of high test operation.
Brief description of the drawings
Fig. 1 is the structural representation of elastic modulus of concrete experimental rig in embodiment；
Fig. 2 is the sectional view one of elastic modulus of concrete experimental rig in embodiment；
Fig. 3 is the enlarged drawing of part A in Fig. 2；
Fig. 4 is rotating shaft and the structural representation of the first flap and the second flap in embodiment；
Fig. 5 is the sectional view two of elastic modulus of concrete experimental rig in embodiment；
Fig. 6 is the enlarged drawing two of part B in Fig. 5；
Fig. 7 is the structural representation of elastic modulus of concrete experimental rig in embodiment.
In figure：1st, base；11st, concrete test block；12nd, backing plate；13rd, foil gauge；14th, accelerometer；15th, leg；2nd, stand
Post；21st, transverse arm；211st, clip；2111st, sleeve；22nd, crossbeam；3rd, mounting box；31st, top plate；32nd, bottom plate；33rd, side plate；331st, allow
Position groove；34th, protective cover；35th, elastic component；4th, rotating shaft；41st, the first flap；42nd, the second flap；43rd, lever；431st, handle；
4311st, Anti-slip cover；5th, the first circular hole；6th, the second circular hole；7th, steel ball；8th, inclined tube；81st, extension；9th, sleeve pipe；91st, rounded corner.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment：
A kind of elastic modulus of concrete experimental rig, reference picture 1, it includes base 1, and four root posts 2 are provided with base 1,
The top of column 2 is provided with mounting box 3.Crossbeam 22 is provided between column 2, end is provided with crossbeam 22 with dismountable
The transverse arm 21 of clip 211, sleeve 2111 is fixed with by the clip 211 of the end of transverse arm 21.Concrete test block 11 to be tested is placed
On base 1, sleeve 2111 is located at the surface of concrete test block 11.
Reference picture 2, the top of mounting box 3 are provided with protective cover 34, inclined tube 8 are provided with protective cover 34.The top of inclined tube 8
Funnelform extension 81 is provided with, extension 81 is reached outside protective cover 34., can be toward putting in inclined tube 8 by extension 81
Put multiple test steels balls 7.
Reference picture 2 and Fig. 3, mounting box 3 include top plate 31, bottom plate 32 and four blocks of end to end side plates 33.The He of top plate 31
It is provided with second circular hole 6 consistent with the diameter of steel ball 7 on top plate 31, the second circular hole 6 on top plate 31 is located on bottom plate 32
The surface of two circular holes 6.The one end of inclined tube 8 away from extension 81 is connected at the second circular hole 6 on top plate 31, in inclined tube 8
Steel ball 7 can be fallen into mounting box 3 by the second circular hole 6 on top plate 31.Placement is provided with the second circular hole 6 on bottom plate 32
The sleeve pipe 9 that the steel ball 7 fallen into mounting box 3 rolls everywhere, the opening on the top of sleeve pipe 9 are provided with for reducing the circle every damage
Chamfering 91.The distance between top plate 31 and bottom plate 32 are equal to the diameter of steel ball 7 so that an only steel ball 7 falls into installation every time
In box 3.
Reference picture 2 and Fig. 3, the rotating shaft 4 of bottom plate 32 is provided through on bottom plate 32, the top of rotating shaft 4 is provided with and top plate
First flap 41 of 31 bottom surfaces fitting, bottom is provided with the second flap 42 being bonded with the bottom surface of bottom plate 32.First flap 41 and
Two flaps 42 are circular slab, and rotating shaft 4 can drive two pieces of flaps to rotate simultaneously when rotating.
The first circular hole 5 is provided with reference picture 2 and Fig. 4, the first flap 41 and the second flap 42, and on the first flap 41
The first circular hole 5 the center of circle to the center of circle of vertical line first circular hole 5 on the second flap 42 of the axis of rotating shaft 4 to the axle of rotating shaft 4
The vertical line of line.As shown in figure 3, during initial state, the first circular hole 5 on the first flap 41 is aligned with the second circular hole 6 on top plate 31, the
The first circular hole 5 on two flaps 42 staggers with the second circular hole 6 on bottom plate 32 so that will not be from when steel ball 7 is fallen into mounting box 3
Mounting box 3 falls.When rotating shaft 4 rotates 90 °, the first circular hole 5 on the first flap 41 staggers with the second circular hole 6 on top plate 31,
Stop that the steel ball 7 in inclined tube 8 continues to fall；The first circular hole 5 on second flap 42 is aligned with the second circular hole 6 on bottom plate 32,
Steel ball 7 in mounting box 3 falls at the second circular hole 6 on bottom plate 32.
Reference picture 5, lever 43 is fixedly installed in rotating shaft 4, slot to make way 331 is provided with the side plate 33 of the side of mounting box 3.
The one end of lever 43 away from rotating shaft 4 is stretched out out of slot to make way 331, and end set has handle 431.It is additionally provided with mounting box 3
Elastic component 35, elastic component 35 is that one end is fixed on side plate 33 in the present embodiment, and the other end is fixed on the spring on lever 43.Profit
With activation lever 43 rotating shaft 4 can be driven to rotate 90 ° with handle 431, elastic component 35 is stretched；Handle 431 is unclamped, elastic component 35 is extensive
Complex deformation, lever 43 reset, and rotating shaft 4 rotates backward 90 °.
Reference picture 6, Anti-slip cover 4311 is arranged with handle 431, Anti-slip cover 4311 serves the effect of increasing friction force, side
Operator rotated by the activation lever 43 of handle 431.
Reference picture 7, when carrying out impact test, concrete test block 11 is placed on the leg 15 of base 1.In concrete
Foil gauge 13 is pasted at the lower surface tensile region maximum strain of test block 11, test piece upper part pastes accelerometer 14, and should with wire
Become piece 13 and be connected dynamic data collection system jointly with accelerometer 14.The surface geometry central point of concrete test block 11 places steel
Backing plate 12, sleeve 2111 is arranged on directly over backing plate 12 using transverse arm 21 and clip 211, then starts to test.
Operation principle is as follows：
After completing Preparatory work of experiment work, by extension 81 toward placing multiple test steels balls 7 in inclined tube 8, during initial state, the
The first circular hole 5 on one flap 41 is aligned with the second circular hole 6 on top plate 31 so that has a steel ball 7 to fall into mounting box 3
In sleeve pipe 9.By the handle 431 stretched out out of slot to make way 331 on the side plate 33 of mounting box 3, pull lever 43 and rotate 90 °.Thick stick
Bar 43 drives rotating shaft 4 to rotate simultaneously draw springs 35, and rotating shaft 4 drives two pieces of flaps to rotate simultaneously.First on first flap 41
Circular hole 5 staggers with the second circular hole 6 on top plate 31, and the first flap 41 stops that the steel ball 7 in inclined tube 8 falls；Meanwhile second flap
The first circular hole 5 on 42 turns to be aligned with the second circular hole 6 on bottom plate 32, and the steel ball 7 in mounting box 3 is from bottom plate 32
Fallen at two circular holes 6.The guiding for the sleeve 2111 fixed through the end clip 211 of transverse arm 21, steel ball 7, which falls, to be pounded to concrete test block
The backing plate 12 at 11 tops, completes one-shot.
Handle 431 is unclamped, elastic component 35 recovers deformation, and lever 43 drives rotating shaft 4 to rotate backward 90 °.On second flap 42
The first circular hole 5 stagger with the second circular hole 6 on bottom plate 32, meanwhile, the first circular hole 5 on the first flap 41 turns to and top plate
The second circular hole 6 on 31 is aligned, and the steel ball 7 in inclined tube 8 is dropped into mounting box 3, under the stop of the second flap 42, steel ball 7
It will not fall.Remove sleeve 2111, take out and reinstall sleeve 2111 and adjustment position after the steel ball 7 of a upper whereabouts.Weight
Multiple said process, can carry out second of impact test.
Said process repeatedly, impact test can be repeatedly carried out to concrete test block 11, and by accelerometer 14 and answered
Become the gathered data of piece 13.Because in steel ball 7 height to fall and direction have higher uniformity, thus test the number of gained
According to higher accuracy.
This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model
Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but
As long as all protected in right of the present utility model by Patent Law.
Claims (8)
1. a kind of elastic modulus of concrete experimental rig, including base (1) and steel ball (7), column is provided with the base (1)
(2), it is characterised in that：The top of the column (2) is provided with mounting box (3), and the mounting box (3) includes top plate (31), bottom
Plate (32) and end to end four pieces of side plates (33), the distance between the bottom plate (32) and top plate (31) are equal to steel ball (7)
Diameter；The rotating shaft (4) of bottom plate (32) is provided through at the geometric center of the bottom plate (32), rotating shaft (4) top is set
There is the first flap (41) being bonded with top plate (31) bottom surface, bottom is provided with the second flap being bonded with bottom plate (32) bottom surface
(42)；
The first circular hole (5) is provided with first flap (41) and the second flap (42), on first flap (41)
The center of circle of first circular hole (5) is arrived to the center of circle of first circular hole (5) of the vertical line on the second flap (42) of rotating shaft (4) axis
The vertical line of rotating shaft (4) axis；It is provided with the second circular hole (6) on the bottom plate (32) and top plate (31), the first flap during initial state
(41) the first circular hole (5) on is located at the underface of the second circular hole (6) on top plate (31), the first circle on the second flap (42)
Hole (5) is staggered with the second circular hole (6) on bottom plate (32)；The diameter of first circular hole (5) and the diameter of the second circular hole (6)
It is equal to the diameter of steel ball (7)；
It is provided with the top of the mounting box (3) for depositing the holding parts of steel ball (7), on mounting box (3) inner bottom plating (32)
Second circular hole (6) place is provided with limiting section；The elastic modulus of concrete device also includes being used to drive what the rotating shaft (4) rotated
Drive mechanism.
A kind of 2. elastic modulus of concrete experimental rig according to claim 1, it is characterised in that：The drive mechanism includes
Lever (43), described lever (43) one end are fixedly installed in rotating shaft (4), and one end away from rotating shaft (4) sets promising lever
(43) push-pull device at fixed of push-and-pull power is provided.
A kind of 3. elastic modulus of concrete experimental rig according to claim 2, it is characterised in that：The push-pull device at fixed includes
Elastic component (35) and the handle for being arranged on lever (43) end, described elastic component (35) one end is fixed on lever (43), another
End is fixed on the side plate (33)；The slot to make way (331) stretched out for handle is provided with the side plate (33) of the mounting box (3).
A kind of 4. elastic modulus of concrete experimental rig according to claim 3, it is characterised in that：It is provided with the handle
Anti-slip cover (4311).
A kind of 5. elastic modulus of concrete experimental rig according to claim 1, it is characterised in that：The holding part is inclination
The inclined tube (8) being arranged at the top of mounting box (3), described inclined tube (8) one end are connected with the second circular hole (6) on top plate (31).
A kind of 6. elastic modulus of concrete experimental rig according to claim 5, it is characterised in that：The inclined tube (8) is remote
One end of second circular hole (6) is provided with funnelform extension (81).
A kind of 7. elastic modulus of concrete experimental rig according to claim 1, it is characterised in that：The limiting section is vertical
The sleeve pipe (9) at the second circular hole (6) place on bottom plate (32) is arranged on, the diameter of described sleeve pipe (9) is more than the diameter of steel ball (7).
A kind of 8. elastic modulus of concrete experimental rig according to claim 7, it is characterised in that：Described sleeve pipe (9) top
Opening is provided with rounded corner (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721104880.2U CN207215616U (en) | 2017-08-30 | 2017-08-30 | A kind of elastic modulus of concrete experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721104880.2U CN207215616U (en) | 2017-08-30 | 2017-08-30 | A kind of elastic modulus of concrete experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207215616U true CN207215616U (en) | 2018-04-10 |
Family
ID=61826219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721104880.2U Expired - Fee Related CN207215616U (en) | 2017-08-30 | 2017-08-30 | A kind of elastic modulus of concrete experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207215616U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307577A (en) * | 2020-04-20 | 2020-06-19 | 太原理工大学 | Concrete material impact performance testing device |
| CN113984555A (en) * | 2021-12-29 | 2022-01-28 | 山东力乐包装股份有限公司 | Impact-resistant detection device for wooden tray |
-
2017
- 2017-08-30 CN CN201721104880.2U patent/CN207215616U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307577A (en) * | 2020-04-20 | 2020-06-19 | 太原理工大学 | Concrete material impact performance testing device |
| CN113984555A (en) * | 2021-12-29 | 2022-01-28 | 山东力乐包装股份有限公司 | Impact-resistant detection device for wooden tray |
| CN113984555B (en) * | 2021-12-29 | 2022-03-29 | 山东力乐包装股份有限公司 | Impact-resistant detection device for wooden tray |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180410 Termination date: 20190830 |
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| CF01 | Termination of patent right due to non-payment of annual fee |